The geomagnetic field was quiet to unsettled on June 22. Solar wind speed
at SOHO ranged between 562 and 674 km/s under the influence of a
high speed stream from CH573. A sudden change in solar wind parameters was
observed at ACE near 04h UTC on June 23. This appears to be the arrival of the
CME observed early on June 21.

Solar flux measured at 20h UTC on 2.8 GHz was 130.0 (increasing
10.0
over the last solar rotation). The Potsdam WDC planetary A index
was 12 (STAR Ap - based on the mean of three hour interval ap indices:
11.8). Three hour interval K indices: 33322233 (planetary), 44332323 (Boulder).

Spotted regions not numbered by SWPC:S2490 [S14E23] was quiet and stable.S2492 [N13E08] was quiet and stable.S2493 [N20W26] reemerged with a penumbra spot.S2496 [N02W09] was quiet and stable.
New region S2498 [N14E73] rotated into view with penumbra spots.
New region S2499 [N20W35] emerged with a penumbra spot.

June 20, 22: No obviously Earth directed CMEs were observed in LASCO and
STEREO imagery.June 21: The CME observed early in the associated with the M2.9 event in
AR 11777 was wide. LASCO observed this as a partial halo CME.

A large northern hemisphere coronal hole (CH573) was in a
geoeffective position on June 17-22. A recurrent trans equatorial coronal hole
(CH574] will likely rotate into an Earth facing position on June 25.

Long distance low and medium frequency (below 2 MHz) propagation along paths
north of due west over high and upper middle latitudes is poor. Propagation on
long distance northeast-southwest paths is good.

The geomagnetic field is expected to be quiet to active on June 23 with a
chance of minor storm intervals due to combined effects from a CME and the high
speed stream from CH573. Quiet to active conditions are possible on June 24-25
as the high speed stream continues.

Coronal holes (1)

Coronal mass ejection (2)

M and X class flares (3)

1) Effects from a coronal hole could reach Earth within the
next 5 days. When the high speed stream has arrived the color changes to
green.
2) Effects from a CME are likely to be observed at Earth within 96 hours.
3) There is a possibility of either M or X class flares within the next 48
hours.

When available the active region map has a coronal hole polarity overlay
where red (pink) is negative and blue is positive.

Data for all numbered solar regions according to the Solar Region Summary
provided by NOAA/SWPC. Comments are my own, as is the STAR spot count (spots
observed at or inside a few hours before midnight) and data for regions not
numbered by SWPC or where SWPC has observed no spots. SWPC active region
numbers in the table below and in the active region map above are the historic
SWPC/USAF numbers.

1) Running average based on the daily 20:00 UTC observed solar flux value at
2800 MHz.
2A) Current impact on the monthly sunspot number based on the Boulder
(NOAA/SWPC) sunspot number (accumulated daily sunspots / month days). The
official SIDC international sunspot number is typically 30-50% lower. 2B)
Boulder SN current month
average to date. 2C) STAR SDO 1K Wolf number 30 day average.
3) Running average based on the quicklook and definitive Potsdam WDC ap indices.
Values in red are based on the definitive
international Potsdam
WDC
ap indices.

This report has been prepared by Jan
Alvestad. It is based on analysis of data from whatever sources are
available at the time the report is prepared. All time references are to the
UTC day. Comments and suggestions are always welcome.

SDO images are courtesy of NASA/SDO and the AIA, EVE, and HMI science
teams.